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Mean Well DDR-480D-24 DC-DC Converter - 480W - 67.2~154V in 24V out 20A

Name: Mean Well DDR-480D-24 DC-DC Converter - 480W - 67.2~154V in 24V out 20A
Brand: Mean Well
SKU: DDR-480D-24
Price: 184.66 USD
Availability: InStock

2:1 or 4:1 wide input rangefanless design4KVdc I/O isolationultra slim dimensions

SKU DDR-480D-24

$184.66 USD

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Select model — 8 in this family

DDR-480D-24

DDR-120D-12 12V out 120W In stock $64.85 USD

DDR-480D-12 12V out 400W Low stock $184.66 USD

DDR-120D-24 24V out 120W Low stock $68.88 USD

DDR-240D-24 24V out 240W In stock $97.44 USD

DDR-480D-24 24V out 480W In stock $184.66 USD

DDR-120D-48 48V out 120W Low stock $64.85 USD

DDR-240D-48 48V out 240W In stock $97.44 USD

DDR-480D-48 48V out 480W Low stock $307.77 USD

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Overview

DDR-480D-24 is the 24V output model of this series: rated current 20A, rated power 480W, typical efficiency 92%.

DDR-480 series is a 480W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (85.5mm), 2:1 wide input voltage, fanless design, -40~+80℃ wide operating temperature, 4KVdc I/O isolation, 150% peak load, current sharing, DC OK, adjustable output voltage and full protective functions. This series of models has various input options: 16.8~33.6V / 33.6~67.2V / 67.2~154V and multiple output options: 12V / 24V / 48V and can be used for industrial & railway control, security control, communication system and other fields. Suitable applications include to DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
Width only 85.5mm
2:1 wide input range
-40~+80℃ wide operating temperature
150% peak load capability
Current sharing up to 1920W(3+1)
DC output adjustable
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
Protections: Short circuit / Overload / Over voltage / Over temperature / Input reverse polarity/ Input under voltage protection
4KVdc I/O isolation(Reinforced isolation)
DC OK relay contact
Remote ON-OFF control
Operating attitude up to 5000 meters(Note.6)
Conformal coating
3 years warranty

Specifications

DDR-480D-24Specifications from the official datasheet (2026-09-10 edition)

OUTPUT

DC VOLTAGE: 24V
RATED CURRENT: 20A
CURRENT RANGE: 0 ~ 20A
RATED POWER: 480W
PEAK CURRENT 5sec.^Note.5: 30A
PEAK POWER 5sec.^Note.5: 12Vo: 601.2W, 24Vo / 48Vo : 720W
RIPPLE & NOISE (max.)^Note.2: 120mVp-p
VOLTAGE ADJ. RANGE: 24 ~ 28V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 500ms, 60ms
HOLD UP TIME (Typ.): Please refer to page 6 hold up time (Load de-rating curve )

INPUT

VOLTAGE RANGE CONTINUOUS^Note.4: 67.2 ~ 154Vdc
VOLTAGE RANGE 100ms^Note.4: 66 ~ 67.2Vdc
EFFICIENCY (Typ.): 92%
DC CURRENT (Typ.): 5A @110Vdc
INRUSH CURRENT (Typ.): 30A
INTERRUPTION OF VOLTAGE SUPPLY: EN50155: 2021-B/C/D type comply with S2 level (10ms)@ full load

PROTECTION

OVERLOAD^Note.5: Normally works within 150% rated output power for more than 5 seconds and then constant current protection 105~135% rated output power with auto-recovery
OVER VOLTAGE: 28.8 ~ 35V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down o/p voltage, re-power on to recover
REVERSE POLARITY: By internal, MOSFET, no damage, recovers automatically after fault condition is removed
UNDER VOLTAGE LOCKOUT: 110Vin (D - type):Power ON≥67.2V , OFF≤65V

FUNCTION

DC OK REALY CONTACT RATINGS (max.): 30Vdc/1A resistive load
CURRENT SHARING: Up to 1920W (3+1 units). Please refer to the Function Manual
REMOTE ON-OFF CONTROL: Please refer to the Function Manual

ENVIRONMENT

WORKING TEMP.: -40 ~ +80℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 5 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85, 5 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 55℃)
VIBRATION: Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
OPERATING ALTITUDE^Note.6: 5000 meters / OVCⅡ

SAFETY & EMC

SAFETY STANDARDS: UL 62368-1, IEC 62368-1, AS/NZS 62368-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:0.71KVdc
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 (CISRP32) Class A
Radiated BS EN/EN55032 (CISRP32) Class B
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A
RAILWAY STANDARD: Compliance to BS EN/EN45545-2 for fire protection ; Meet BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC

Parameter	Standard	Test Level
Conducted	BS EN/EN55032 (CISRP32)	Class A
Radiated	BS EN/EN55032 (CISRP32)	Class B
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 750.3K hrs min. Telcordia SR-332 (Bellcore) ; 101.7K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 85.5*125.2*129.2mm (W*H*D)
PACKING: 1.375Kg;8pcs/12Kg/0.95CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at normal input (B:24Vdc , C:48Vdc , D:110Vdc ) , rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltage. Please check the derating curve for more details.
5. 150% 5 seconds, please refer to peak loading curves.
6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than2000m(6500ft).
7. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )

Technical drawings

DDR-480D-24 Block Diagram — Block Diagram

DDR-480D-24 Derating Curve — Derating Curve

DDR-480D-24 Function Manual — Function Manual

DDR-480D-24 Input Under-Voltage Protection — Input Under-Voltage Protection

DDR-480D-24 Inrush Current — Inrush Current

DDR-480D-24 Efficiency vs Load & Vin Curve — Efficiency vs Load & Vin Curve

DDR-480D-24 D D R - 4 8 0 series — D D R - 4 8 0 series

DDR-480D-24 Mechanical Specification — Mechanical Specification

DDR-480D-24 Installation Instruction — Installation Instruction

Typical applications

Downloads

Certificates7

UL Certificate(DDR-480)(EN) PDF Download

Mean Well E183223 UL Certificate PDF Download

DDR-480-EN50155 Certificate PDF Download

Mean Well DDR-480-CB(UL) Certificate PDF Download

Mean Well DDR-480-CE-dec Certificate PDF Download

Mean Well DDR-480-UK-dec Certificate PDF Download

Mean Well EAC Certificate PDF Download

Test reports1

Mean Well DDR-480D-24 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the DDR-480D-24 to step down a 110V DC distribution bus to 24V for factory automation?

Yes. The DDR-480D-24 accepts 67.2-154V DC input, covering 110V and 125V DC bus systems. It delivers 480W at 24V/20A, which is well suited for powering PLCs, HMIs, sensors, and actuators in factory automation panels mounted on DIN rail.

Is the DDR-480D-24 appropriate for converting a 72V renewable energy system to 24V for battery charging equipment?

The DDR-480D-24 accepts input from 67.2V to 154V DC, so a 72V nominal system falls within its range. It outputs a regulated 24V at up to 20A (480W), which can power 24V battery chargers, inverters, or monitoring equipment. The 4KVdc isolation protects against ground potential differences between source and load.

Can the DDR-480D-24 power 24V instrumentation in a mining or heavy-industry environment?

The DDR-480D-24 is designed for demanding conditions with a -40 to +80 degrees C operating range (load derating applies at high ambient temperatures) and IEC61373 shock and vibration compliance. With 480W at 24V/20A and DIN rail mounting, it can supply instrumentation, control panels, and communication equipment in mining or heavy-industry settings where a high-voltage DC bus is available.

Does the DDR-480D-24 need forced air cooling in a sealed DIN rail enclosure?

The datasheet rates the DDR-480D-24 for -40 to +80 degrees C operation, with the allowable load reduced at higher ambient temperatures according to the derating curve. In a sealed enclosure with other heat-generating equipment, keep the ambient around the unit within that curve for your load. If cabinet temperatures run high, consider adding ventilation or thermal management to avoid having to derate the output.

What is the isolation voltage between input and output on the DDR-480D-24?

The DDR-480D-24 provides 4KVdc input-to-output galvanic isolation. This level of isolation is critical in applications where the high-voltage DC input bus and the 24V output circuit must remain electrically separated, such as in renewable energy, telecom, or railway systems.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well DDR-480D-48 DC-DC Converter - 480W - 67.2~154V in 48V out 10A	480W	48V	10A	IP20	$307.77	View
Mean Well DDR-480D-12 DC-DC Converter - 400.8W - 67.2~154V in 12V out 33.4A	400.8W	12V	33.4A	IP20	$184.66	View

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